| Opelika to Clacton-on-Sea | 4,345.55 mi (6,993.48 km) |
| Opelika to Clay Cross | 4,213.83 mi (6,781.51 km) |
| Opelika to Clayton | 4,185.91 mi (6,736.57 km) |
| Opelika to Clayton le Moors | 4,163.65 mi (6,700.74 km) |
| Opelika to Cleckheaton | 4,190.71 mi (6,744.30 km) |
| Opelika to Cleethorpes | 4,260.69 mi (6,856.92 km) |
| Opelika to Clevedon | 4,189.90 mi (6,742.99 km) |
| Opelika to Clifton | 4,228.43 mi (6,805.01 km) |
| Opelika to Clifton | 4,210.17 mi (6,775.61 km) |
| Opelika to Cliftonville | 4,365.31 mi (7,025.29 km) |
| Opelika to Clitheroe | 4,161.55 mi (6,697.36 km) |
| Opelika to Clydebank | 4,049.34 mi (6,516.79 km) |
| Opelika to Coalville | 4,224.42 mi (6,798.55 km) |
| Opelika to Coatbridge | 4,064.04 mi (6,540.44 km) |
| Opelika to Cobham | 4,292.68 mi (6,908.39 km) |
